17分钟过桥问题的C++实现，这个曾经是微软的一道面试题，这里用比较精炼的c++代码实现了，有较好的参考价值，在c++ BUilder 环境下调试通过。-17 minutes across the bridge problem C++ implementation, this used to be a Microsoft interview questions, here in a more refined c++ code, and a good reference value in c++